Riprap.



following is a specification.-

UTNITED Simms PATENT oFFoE.'

se w. hmmm?, oF 'KANSAS CITY, AND FRANKW. JANsxzf, or sus. Josnmmssovnn RIPBAP.

FRANK lV, .'lANsKY, citizens of the United States, residing, respectively, at Kansas City, in the county' of Jackson, und St.

Joseph, Buchanan county, State of Missouri, have inventgd Cextal.'1 new and uscful lmproviunents 1n Ripraps, ol winch-the.

This invention relates to ripraps for preventing; a rapidly flowing stream from cutting 'au-'ny its bunks and causing the streanls to rebuild or refill cuts in their banks,va nd the object is to produce a riprap of4 simple, strong, durable and'comparatively inexpen sive construction, which can bc land with facility-and lie easily and l'irnily anchored, and which performs its protecting .function cllicientlyiind without'the tendency t'o produce cave-'ins frequently incidental to the use of stone'x i] n r.ips, Or-ripraps which must be heavily u^-eigl1terlwvith broken stone toretain thein in position.

suo

' thereagainst.

A further object '1s to produce a metallic riprnli, which tends `to grip Athe bed of :L river or stream, and possesses-in a high degree the prbperty of resistance t0 corrosive/action when-submerged in water, and which? 'can `bedijnns,Jorted in Folded condition to, or

th' part" ,itt which oiinjie assembled at the point where it .is to' be'laid, with ca se and des Mitch und at 'comparatively low cost.

i Aith these objc-ets in view the invention consists in certa-nV novel and' peculiar features 'of construction and combination of parts as hereinaftci'gdescribed and claimed; and in order that itfu'my be fully understood reference is to be `had to the accompanying drawirig, in which- Figure 1, is 'a -plan view showing a sect-ion of ripi'ap emboilying'fhe invention, :ip hed in operative positiou'to-a pointon the ank of a river where such bank is `being out away .by thcwat'er.

Fig. 2, is a transverse section showing how the plates will adapt themselves to the. sin-- face co1|lig111ation".of the bed ofthe river or stream so that each pleteV shall rest flatly Fig,'.3, is'un `enlnrghed cross section thro'uh one of; the plates of the riprap' and "a so 'shows said plate'threided on crossed anchoring wires or cables.

Specification o! Letters Patent.

` Patented'JanaS, 1918-.`

Anblicatlon led August 2, 191B. Serial No. 1.115851.

Fig. 4, is a perspective view of one of the plates.

Fig. 5, is a plan view of a modified form of construction of the iiplap.

Before ljirocee'ding 'with nV detailed dei scription of the invention, it is desirable t state that many attempts have been made to produce efficient ripxfup `as n. substitute for the ripraps commonlymadc of woven wili low branches and weighted with broken stone. I iiprups nmde of hcnvy slabs of conl (i5` these have proven iinpractieable due tothe crete wired together have been made butl fact that the weight'of the slabs would rew f Sult in rupturiug the anchoring cables andj also because they would n nposeisuch .wei ht 70.

upon the bed or bank of the stream-t at cuve-ins would ensue..

le propose to overcome this diiculty bym' providing a flexible bed composed .oficnsth iron plates, as such plates have been `fonnfl to possess great corrosion-resisting propelwater, this being one of the dilionl'tie'sswhiehf,

has been encountered inthe laying ofrcon crete-slab ripraps.

By 'thence ofthcse plates thexinchoring cablvs'ure not' subjected-,to any-'materialj stressand hence ,tlie-riprapcan;'be'nrapidlylaid withoutdangervoi the loss .'offnnysecon r 1LT@ j tion of' it through the breakingofcnbles. l Referring now to the drawing in detnil indlcates thin cust metal 4plates provided,

near opposite sides 4witha set'of-'openings-Z* und near the ,other or remainingsideswith' Aa set ifopenings 3.

In the :preferred --construction, the. lates will be provided with upxvmjdlybow :por-y tions 4, of conical formin plim' view fand-zthe openings 2 nu dl 3I will be formed in the spices Y of the .respectivebowedportionsso thatqei 4longitudinally extending anchoring \v1res"qglf fr j.

.ties when completely submerged A1n=\ vg1.ti;er,

and to secure these lates together b y cables4 mentioned r'operly anchored cables 5 and transversely extending anchoring. wires or cables 6, may be threaded through the alined openings 2 and 3 respectively, without being bent or kinked, as appears clearly in Fig. 3.

#The down-stream ends of the wires or cables 5 will be enlarged in any suitable manner, as by knottingas at 7 and the 'upstream ends of said wires or cables will lead up over the adjacent bunk. and be secured to dead-men 8. The inner ends of the transverse cables 6 will be likewise enlarged as at 7 and their outer end s will lead up over the bank and be sccured'to dead-men 9, it being preferred that a plurality of adjacent transverse cables will be anchored to a single dead-man as there will not be as much strain upon the deadsmen 9, While the riprap is being laid, as upon the dead-men After the cut-away portion of the bank has been filled through deposits therein of sand and the like by the stream, there wiil be practioallI no strain tending to slide the riprap out into the stream. lt will be further noted that the flat. .lates will have a frictional grip upon the ed of the river or stream cause they will be suliiciently heavy for said bed to enter the recesses. `formed in the undersides of the plates through the upwardly bowed portions thereof. The entrance of the bed into these recesses will not only tend to guard against endwise or side- `wise movements but Will ltend to guard against twisting or turning movements oi' the plates on the bed.

In Fig. 5, the plates are pivotally .inked together by rings l0 instead of being threaded upon wires orcables. Inthis case the upstream series of plates will be anchored by suitable cables 1I, to they dead-men 8, and the, outer series oi' longitudinally alined plates will be anchored by cables l2 to dead-men 9.

A riprap composed of thin metal plates exibiy connected togethereither by continuous wires or cables or by links 10 can be conveniently folded or rolled for trans portation and as conveniently laid from a scow or float. For convenience of illustration theends of the caved-in portion of the bank are s uared ina manner which would not result rom natural action of the water.

` and in practice it is desirab e to cut the bank follows the directlon indicated by the dotted line 1E. the plates above said line may rest 'upon t e ltop of the bank or may be dispensed with. t,

From the`ahove description it will be apparent that We have produced a riprap possessing the features of advantage' enumerated as desirable and we wish it to be understood that while we have illustrated and described the preferred construction of the same we reserve the right to make all changes falling within the spirit and scope of the appended claims.

l. A riprap comprising a set of thin lates arranged side by side in longitudine and transverse rows, each plate being bowed upward at each edge to provide recesses, and each bowed portion being provided at its inner end with ari-opening, the opening at each side being alined with the opening at the opposite side, flexible cables paralleling the lon itudinal rows and extending through the ongitndinally alined openings of such rows, transverse cables paralleling the transverse rows and extending through the other openings of said plates, anchors for the corresponding ends oi the lon -itudinaliy extending cables, and anchors or the corresponding ends of the transversely ex' tending cables.

2. A thinmetal plate of substantially rec taugular form, provided midway the length of each edge with an upwardly bowed conin cal portion to form a downwardl facing recess, and provided at the apex o each conical portion wi" an opening in the plane .of the upper side cil the ody -of the plate.

In testimony 'whereowe afix our signa tures, in the presence of two witnesses.

ASA W. FARN EY. FRANK W. JANSKV Witnesses:

G. Y. THoRPE, K. W. THoRx'E.

wo i 

